I'm absolutely sure that we should have an option to permanently block 3-5 players - it totally wouldn't cause any issues during queueing and it'd help us avoid the most toxic players with similar rank, playing in the same queues, who we meet sometimes. I had 2 rankeds in twisted treeline today versus the same 3 premades and it was... in the name of the Jesus Christ, that was the most awful experience during my league of legends career. They were saying the most offensive things possible on the chat through all the game, even if I muted them after ~7 minutes of the game, I'm still feeling very badly after this - such situations are putting me closer to quit LoL forever (around 2 years ago I quit because of toxic players and several weeks ago I started playing again). Players should have an option to block few players, no more. It's really enough - such situations are really rare but they're also really ugly.